Jaisalmer
Fort is situated in Jaisalmer city in Indian state of Rajasthan. It
was built in 1156 AD by the Bhati Rajput ruler Rawal Jaisal, from
where it derives it name. It is one of the largest forts in the
Desert.

Its massive yellow sandstone walls are a tawny lion
color during the day, turning to a magical honey-gold as the sun
sets and camouflages the fort making it appear a part of the
picturesque yellow desert. Thus, no wonder, it is also known as the
"Golden Fort". It is also known by the name "Sonar
Killa"

This is the world's only living fort and about
a quarter of city's population live in the fort

The fort
contains 3 layes of walls. The outer or the lower layer is made out
of solid stone blocks and it reinforces the loose rubble of Trikuta
Hill.The second wall, i.e. the middle wall snakes around the
fort. From the inner most or the third wall.